Chemistry 11-11-19 Oxidation Numbers & Pre-Test Quiz Info

CHEMISTRY: One man’s rust is another student’s lesson in chemistry! Great job today with oxidation numbers. Now it’s time to go and practice applying them!

God bless you as you study for the Chapter 7 Memorization Quiz for Wednesday! You need to have memorized (and be able to use!!): polyatomic ions, monatomic ions (but you can get these off the periodic table), acids, prefixes, and how to write and name chemical formulas. Click here for a copy of the PERIODIC TABLE you’ll use on the test – if you want to practice using it on your own.

That’s a lot, but you can do it! And make double dog sure you are working hard at practicing it all now!!


flickr photo by scottwillis

PHYSICS 11-11-19 Vertical Fish Forces & Forces with Pulleys and Friction

PHYSICS: Not sure if you’d ever find a fish on an elevator, but you sure could treat the problem like it was! Here a look at the fish on a line problem, and then, a different take on forces – an application of horizontal forces, vertical forces, friction, all at once!

Wow! Amazing job solving these problems – can you now go see if you can solve them by yourself? God bless you as you study! I’ll be praying for you!

Help session tomorrow, 7:20ish A.M. – unless by some remote chance we are out of school because of the weather.


flickr photo by Elisa Dudnikova

Hon Chemistry 11-8-19 Polymers

HON CHEMISTRY: Oh, my word! We finally finished the chapter! Have you had a chance to check out the Chapter 7 Stuff to Know sheet?

Also amazing – did you realize molecules could be that large? And so many of them! Don’t you think polymers are some pretty unique compounds? Let’s play with them next week!

Some items for contemplation: why are certain plastics recyclable and others not…and what about dishwasher and microwave safe?


Image source: http://www.packtech.ca/pb/images/img32161428fffbe41e07.jpg

Physics 11-8-19 Net Vertical Force

PHYSICS: Great start with net vertical force! Don’t you think it’s the same as horizontal – just turned 90 degrees? And incredible demonstrations of some important concepts! Thank you Jackson & Matty, and thank you Danny! Awesome! I love, love, love watching you make physics come alive!

So….I started recording a little early and there’s probably about 10 minutes of Jackson and Matty and Danny jumping off the lab station, but then – vertical forces.

Chemistry 11-8-19 Binary Molecular Formulas

CHEMISTRY: Do you feel like you have letter and numbers swimming in your eyes? This is one of those times that paying attention to details is super, super important! Here’s the lecture from today on writing formulas and names for binary molecular compounds. Part of it’s really similar to what you learned to do last week for ionic compounds, but another part is totally different. Details!!

Make sure you keep everything straight. Do something that will organize all the information for you, so you won’t get confused. Also, don’t forget the lists you have to memorize – it’s getting larger and larger!! And practice, practice, practice!!!

Need extra practice? Another help session??


flickr photo by Roger Smith

Hon Chemistry 11-6 & 7-19 Empirical & Molecular Formulas

HON CHEMISTRY: Awesome job yesterday and today!! You just about figured out how to find empirical formulas and molecular formulas all by yourself! I love the way you were able to think through what you knew and what you needed to find a solution!

Be sure and practice – if you don’t it’ll get all turned around and you’ll end up leaving off an important step. The hardest part is that it’s not a set formula for you to plug and play, but if you’ll keep in mind that you’re really just looking for subscripts which are just moles, you’ll be able to think it through. Percent to mass, mass to moles, moles to smallest whole number ratio.

Are you starting to catch on to the steps? It will be good for you to memorize them, but would it not be just tons better to understand why you need each step – backwards and forwards, so then you wouldn’t need to memorize them at all!

And then, also remember what molecular formulas are – just a multiple of the empirical formula. Keep that concept in mind, and you’ll have no problem remembering to divide the molecular formula mass by the empirical formula mass to find X! Easy peasy! 🙂

11-7-19 Molecular Formulas Lesson:

flickr photo by Darwin Bell

11-6-19 Empirical Formulas Lesson:

Photo by Christopher Sardegna on Unsplash

Chemistry 11-5-19 Chemical Formulas with Polyatomic Ions

CHEMISTRY: Great job today! Do you understand better now? Remember it’s like baby steps, first binary ionic compounds, and now, formulas with polyatomic ions. Begin learning how to do them now! And practice, practice, practice!!

Speaking of – how are you doing with polyatomic ion memorization? Quiz tomorrow!

Another great idea, click here for a copy of the Hints for Naming Chemical Formulas Flow Chart, or find it under the Worksheet/Handouts Tab. Follow it every time you name chemical formulas!!


flickr photo by skycaptaintwo

Hon Chemistry 11-5-19 Percent Composition

HON CHEMISTRY: Great job today! Way to apply chemistry to your everyday life!!

I think you’ll find that percent composition problems are super easy to catch on to. First, though, be sure you know which “type” of percent composition you’re trying to fine. Also make sure you can write chemical formulas (I won’t give them to you!) and that you’ve memorized the formulas for acids and those chemical names and formulas for common substances. It’s just plug and play from there! 🙂


flickr photo by Τϊζζ¥

Chemistry 11-1-19 Intro to Chemical Names & Formulas

CHEMISTRY: Great job learning to name binary ionic compounds – and even beginning to write formulas! Next Tuesday, let’s add polyatomic ions! Whoot, whoot!!

Speaking of formulas, what is your plan for all the memorization in this chapter? Word of warning – don’t wait to the last minute!!

Super important – the secret for the next few days and this entire chapter is DON’T GET BEHIND! Keep up with me and practice, practice, practice!